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Table 3 Prevalence of various categories of glucose tolerance according to the presence and severity of obstructive sleep apnea in 137 extremely obese subjects

From: Type 2 diabetes and pre-diabetes are associated with obstructive sleep apnea in extremely obese subjects: A cross-sectional study

Glucose tolerance status Non OSA
(AHI < 5)
Mild OSA
(AHI 5-15)
Moderate OSA
(AHI 15-30)
Severe OSA
(AHI > 30)
Normal glucose tolerance 49% (26) 10% (4) 17% (3) 25% (6)
Prediabetes 34% (18) 52% (22) 50% (9) 38% (9)
Type 2-diabetes 17% (9) 38% (16) 33% (6) 38% (9)